Implementation
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-The soft and hard lockup detectors are built around a hrtimer.
+The soft and hard lockup detectors are built around an hrtimer.
In addition, the softlockup detector regularly schedules a job, and
the hard lockup detector might use Perf/NMI events on architectures
that support it.
Frequency and Heartbeats
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-The core of the detectors in a hrtimer. It servers multiple purpose:
+The core of the detectors is an hrtimer. It serves multiple purposes:
- schedules watchdog job for the softlockup detector
- bumps the interrupt counter for hardlockup detectors (heartbeat)